Two surveyors, P and Q measured a 20 m distance six times each, as given below (in m):
Surveyor P: 19.97, 20.02, 20.04, 19.98, 19.96, 20.03
Surveyor Q: 20.05, 20.07, 20.05, 20.06, 20.07, 20.07
On the basis of accuracy and precision of the measured values, choose the CORRECT statement.
Surveyor P: 19.97, 20.02, 20.04, 19.98, 19.96, 20.03
Surveyor Q: 20.05, 20.07, 20.05, 20.06, 20.07, 20.07
On the basis of accuracy and precision of the measured values, choose the CORRECT statement.
Show Hint
- Observed values of Surveyor P are less precise and observed values of Surveyor Q are more accurate.
- Observed values of Surveyor P are more precise and observed values of Surveyor Q are less accurate.
- Observed values of Surveyor P are more accurate and observed values of Surveyor Q are more precise.
- Observed values of Surveyor P are less accurate and observed values of Surveyor Q are less precise.
The Correct Option is D
Solution and Explanation
- Precision refers to how close the measurements are to each other, regardless of whether they are close to the true value or not.
Step 2: Analyzing Surveyor P's measurements. Surveyor P's measurements range from 19.96 to 20.04. These values are quite spread out, indicating that the measurements are not very precise. The measurements fluctuate more significantly, suggesting lower precision.
Step 3: Analyzing Surveyor Q's measurements. Surveyor Q's measurements are much closer together, ranging from 20.05 to 20.07. This small variation indicates high precision, as the values are consistent. However, these values are consistently higher than 20, so they are not as accurate as they are offset from the true value.
Step 4: Conclusion. Based on the analysis, Surveyor P’s measurements are less precise due to the greater variation between values, and Surveyor Q’s measurements are more precise (consistent) but less accurate since the measurements consistently overestimate the true value.
Thus, the correct answer is (D).
Top Questions on Surveying
- The plan of an area has shrunk such that a line originally 10 cm, now measures 9.5 cm. If the original scale of the plan was 1 cm = 10 m (R.F. = 1:1000), the shrinkage factor is given as:
- A tape (30 m long) when suspended, has a sag (dip) 'd' of 30.15 cm at the mid-span under a tension of 100 N. The total weight of the tape is given by:
Match List-I with List-II
List-I List-II (A) Alidade (III) Plain table surveying (B) Arrow (I) Chain surveying (C) Bubble Tube (II) Leveling (D) Stadia hair (IV) Theodolite surveying
Choose the correct answer from the options given below:Match List-I with List-II
List-I List-II Type of correction Formula used (The symbols have their usual meaning) (A) Sag correction (I) \( \pm L(1 - h/R) \) (B) Pull correction (II) \( -\frac{1}{24} \times \left(\frac{W}{P}\right)^2 \) (C) Temperature correction (III) \( \pm (T_f - T_s)L \) (D) Mean sea level correction (IV) \( \pm \frac{(P_l - P_s) \times L}{AE} \)
Choose the correct answer from the options given below:- Consider the following characteristics of contour: (A) A uniform slope is indicated when contour lines are spaced uniformly
(B) Contour lines cannot go anywhere but can close on themselves
(C) A set of closed contours indicates a depression or a summit, according to the lower or higher values being respectively inward
(D) A contour is an imaginary line passing through the points of an equal level on the surface of earth
Choose the correct answer from the options given below:
Questions Asked in GATE GE exam
Eight students (P, Q, R, S, T, U, V, and W) are playing musical chairs. The figure indicates their order of position at the start of the game. They play the game by moving forward in a circle in the clockwise direction.
After the 1st round, the 4th student behind P leaves the game.
After the 2nd round, the 5th student behind Q leaves the game.
After the 3rd round, the 3rd student behind V leaves the game.
After the 4th round, the 4th student behind U leaves the game.
Who all are left in the game after the 4th round?
The 12 musical notes are given as \( C, C^\#, D, D^\#, E, F, F^\#, G, G^\#, A, A^\#, B \). Frequency of each note is \( \sqrt[12]{2} \) times the frequency of the previous note. If the frequency of the note C is 130.8 Hz, then the ratio of frequencies of notes F# and C is:
Here are two analogous groups, Group-I and Group-II, that list words in their decreasing order of intensity. Identify the missing word in Group-II.
Abuse \( \rightarrow \) Insult \( \rightarrow \) Ridicule
__________ \( \rightarrow \) Praise \( \rightarrow \) Appreciate
- Had I learnt acting as a child, I ________ a famous film star.
Select the most appropriate option to complete the above sentence. Figure below shows the scatterplot of training pixels of water (w), sand (s), forest (f) and commercial (c) in bands 1 and 2. Pixel ‘A’ having digital number 4 and 6 in band 1 and band 2, respectively, is to be classified using k-nearest neighbor classifier having the value of k equal to 5. The assigned class for the pixel ‘A’ is ____________
- GATE GE - 2025
- General Science